Is the API Integration Builder skill free?

Yes. The skill itself is free from Toowiredd/claude-skills-automation. SkillProof publishes the install command and an independent test verdict at no cost.

What is the API Integration Builder SkillProof Score?

8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.

How do I install API Integration Builder?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use API Integration Builder with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

API Integration Builder

Scaffolds a typed API client with retry, rate limiting, and auth from a spec

by Toowiredd · Toowiredd/claude-skills-automation

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.8/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · b562ff5

Real A/B on a 1-endpoint Weatherly client: baseline silently dropped the explicitly-requested rate limiting; the skill's modular output (separate auth/retry/rate-limiter/errors files) delivered it correctly out of the box. Docked a docs point because the SKILL.md hardcodes the original author's output path (/home/toowired/.claude-artifacts/...) as if universal.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 8/10
Docs & honesty 4/5

What API Integration Builder does

Generates a multi-file TypeScript API client (client, types, auth, errors, retry, rate-limiter, mocks) for a third-party REST/OAuth API. Triggers on phrasings like "integrate API", "API client", "connect to service", or a named vendor integration (Stripe, SendGrid, Twilio).

How to install API Integration Builder

git clone https://github.com/Toowiredd/claude-skills-automation
cd claude-skills-automation
mkdir -p ~/.claude/skills
cp -r skills/api-integration-builder ~/.claude/skills/api-integration-builder

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger API Integration Builder

/api-integration-builder Scaffolds a typed API client with retry, rate limiting, and auth from a spec

It also activates on plain-language prompts like these:

Build me a TypeScript client for the Stripe API with retries
Generate an SDK for this REST API including rate limiting
I need a typed client to connect to SendGrid's API

Frequently asked questions

Is the API Integration Builder skill free?: Yes. The skill itself is free from Toowiredd/claude-skills-automation. SkillProof publishes the install command and an independent test verdict at no cost.
Does API Integration Builder work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Tested · Works. Real A/B on a 1-endpoint Weatherly client: baseline silently dropped the explicitly-requested rate limiting; the skill's modular output (separate auth/retry/rate-limiter/errors files) delivered it correctly out of the box. Docked a docs point because the SKILL.md hardcodes the original author's output path (/home/toowired/.claude-artifacts/...) as if universal.
What is the API Integration Builder SkillProof Score?: 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.
How do I install API Integration Builder?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use API Integration Builder with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.